The Marvel vs. Capcom 3 roster just keeps on growing. At a New York Comic Con panel, Capcom announced the addition a Bionic Commando's Nathan Spencer (with dreadlocks 'n bionic arm!) 'n Ghosts 'N Goblins' Sir Arthur, both from the Capcom half a the fighting mash-up. In addition, Capcom revealed some alternate costumes for Spider-Man. Oh, 'n there's a story, too:

"Victor Von Doom has assembled the greatest villains his world has t' offer. Together with the diabolical Albert Wesker, this unholy alliance will join their respective universes in an effort t' conquer both. But doing so has come with a terrible price. A great 'n powerful threat has been awakened .... a threat that will set into motion a battle the likes a which neither world has ever seen ... a battle that threatens the fate a two worlds!"

But that be not all! This weekend will hold at least one more MvC3-related surprise. Marvel be having a panel a it be own tomorrow morning at 10:45 a.m. EDT, where it will announce two more characters from it be side a the game -- in addition t' a brand new game. We know that one be a returning character, but one be a newcomer t' games. Exciting, no? we be planning on live-blogging the event, so stay tuned!